Question

If (x+5) is a factor of p(x), then the value of k is *
p(x) = x3 – 20x + 5k​

Answer 1

Answer:

k = 5.

Step-by-step explanation:

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Answer 2

Answer:

5

Step-by-step explanation:

x+5=0

x = -5

Now ,

P(x) = x³ - 20x + 5K=0

→ (-5)³ - 20 (-5) + 5K=0

-125 +100 + 5K = 0

-25 + 5K = 0

=> 5K = 25

K= 25/5

k = 5

Therefore value of k = 5